Improvement in fanning-mills



3 Sheets-Shee't 1.

E. M. GILBERT;

Panning-Mill.

Patentd 080.2 1879.

HwEs'Es ATTORNEY.

ILPETERS, FHOTO-LITHDGRAFHER. WASHINGTON. D. C,

3 Sheets-Sheet 2.

E. M. GILBERT.

Panning-M111. No. 222,130. Patented 0 0.2, 1879.

WITNESSES 1 1v VEJV'TOR a Sheets-Shag 3. E. GILBERT.

Fanning-Mill.

No.222,130. Patented Dec. 2, I879.

. IWVLWT'OR N. PETERS, PHOIGLKTHDGRAPNER, WASHINGTON, Dv C- markedthereon, which form a part of this a detail View; Fig.

drums N N, in which the fans with a pin, a, at each end to fit inperforations UNITED STATES PATENT OFFICE.

m EDWARD M. GILBERT, OF BYRON, MINNESOTA.

IMPROVEMENT IN FAINNING-MILLS.

Specification forming part of Letters Patent No. 222,130, dated December2, 1879 application filed May 9,

To all whom it may concern:

Be it known that I, EDWARD MARSHALL GILBERT, of Byron, in the county ofOlmsted and State of Minnesota, have invented certain new and usefulImprovements in Fanning- Mills; and I do hereby declare that thefollowing is a full, clear, and exact description of the invention,which will enable others skilled inthe art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to letters of reference specification.

Figure 1 of the accompanying drawings is a side elevation of mygrain-separator. Fig. 2 is a longitudinal vertical section. Fig. 3 is 4,an end View of the mill. Figs. 5, 6, 7, 8, and 9 are detail views ofportionsof the mill and elevator.

My invention consists in certain improvements in those grain separatorscommonly called fanning-mills, and will hereinafter be more particularlydescribed and claimed.

A a in Fig. 2 are screens of fine texture, or about No. 7 mesh. B I)represent sieves of coarse texture, of about .No. 9 mesh, fitted intogrooves in sides of the shoe 0. The saidshoe is elongated, so as toextend directly over the operate, as shown in Fig. 4. This position ofthe screens A a is such as to be out of the way of the airblast from thefans. D represents a spout arranged to receive thescreenin gs from thefirst screen, A, and lead them to the spout E. F represents a pivotedcut-01f operated by the rod f in said spout E, and discharging the grainat will, either into the spout G, leading to the elevator, or into thetrough H, out at the side of the mill. The screening-board I and troughi receive the screenings from the two sieves A a, and lead also to theside of the mill. The screenings from the sieves B b fall either uponthe bottom board of the shoe K or the grading-board l Z. In the formerinstance the grain is led by the guides m min Fig. 5, and dischargedinto the spout G, leading to the elevator. The grain falling upon thegrading-boards Z Z is discharged upon the bottom board, J, of the shoeand into thetrough H. The upper grading-board, l, is provided in thelower grading-board. The lower grad ing-board is secured in position bypins projecting from each inner side of the shoe and fitting in the slotat in Fig. 8.

In Fig. 4., N N represent drums, in which the wings of the fan operate.These drums are separated from each other at suficient distance to admitthe elevator-spout between them.

0 in Figs. 2 and 3 represents the perforated elevator-belt, into whichthe pins 2 2 in the upper surface of the pulleys P P operate. Affixedtransversely across the elevator-belt are the cleats R, as shown in Fig.2, about one inch in thickness, which, with the perforations in thebelt, serve to lodge the grain in the process of elevatiu g. Theelevator-belt is operated by perforated belt 10, operating on pulleysattached to fan-shaft and the upper pulley-shaft of elevator. Theelevator is secured at the top by the hooks S, and the lower portionresting in the recess T.

The perforations in the elevator-belt co-operate with the cleats R tocarry up the grain, fewer cleats being required on this account. Theyprevent choking and permit the elevatorbelt to be, loose upon thepulleys, thereby diminishing loss of power from friction, &c.

Having thus described the construction and operation of my invention, Iclaim and desire to secure by Letters Patent- 1. In a grain-separator,the combination of the elongated shoe 0, holding the compound screens AB a b and extending over the two separated drums N, placed within theframe of the machine, and operating substantially as and for thepurposes set forth. I

2. The bottom board of the shoe K, substantially as described, providedwith guides m m and opening H, and arranged in the relation described tospout E, having divider F, and to the elevator, as and for the purposesset forth.

3. The combination, with shoe 0, of the spouts D, E, and G, the latterprovided with cut-off F f, as and for the purpose described.

4. In a grain-separator, the pivoted cut-01f F, arranged in spout E, andprovided with rod f, combined and arranged as and for the purposedescribed.

5. The combination, with the spout G of the fanning-mill, of theperforated elevator-belt O,

2 7 I I 0 r V 222.130

having the cleats R, and the pulleys having the pins 2, constructed andcombined substantially as and for the purposes set forth.

6. In a grain-separator, the combination of the hooked rods S S and therecess T with the elevator placed between the drums N and formed with ashoulder, substantially as and for the purposes set forth.

7. In a grain separator, the elevator, arranged as described withrespect to spout G,

and supported between the drums N, substantially as set forth.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

EDWARD MARSHALL GILBERT.

WVitnesses:

J o B. KENDALL, A. J. SLADE.

